Answer:
yes- one reason is not waiting at least 20mins after eating before getting in. Yes digestion can be a problem and waiting an appropriate amount of time after eating will take care of that. Another problem a person can have is if there is bacteria present in the water. Generally you have problems with ear infections if water does not have a proper amount of disinfectant. Usually chlorine is used to kill the germs in the water, but other chemicals and systems are available. Other infections could occur depending on the bacteria present. If you notice green growth in the pool, typically on the walls or other unpleasant conditions such as cloudy water, it would be best to check with the attendant or owner to be sure the water is safe for swimming. Most commercial pools will close if they have a water contamination problem, but a private may not be closed and you need to use discretion before entering.